allery100 ଜଣ ଛାତ୍ରଛାତ୍ରୀଙ୍କ ମଧ୍ୟରୁ, 60 ଜଣ ଗଣିତ, 50 ଜଣ ବିଜ୍ଞାନ ଏବଂ 40 ଜଣ ଉଭୟ ପସନ୍ଦ କରନ୍ତି। କେତେ ଜଣ କେବଳ ଗଣିତ ପସନ୍ଦ କରନ୍ତି?
A30
B20
C40
D60
Answer & Solution
Correct answer: B. 20
କେବଳ ଗଣିତ = ମୋଟ ଗଣିତ - ଉଭୟ = 60 - 40 = 20.
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